The icon for the new Microsoft doc types docx xlsx are not shown on the screen. Google docs is unable to open this new file format to show the content on the screen, only doc and xls are represented properly. I verified the server and could not find any mime type files or definition. The browser Fire fox shows the icon properly on the screen for all listed documents and selects the proper software, application to open the file.

How can I add new mime types to the system and make Google doc work with the new Microsoft formats.